1.

General description

The 74LVC574A is an octal D-type flip-flop featuring separate D-type inputs for each

flip-flop and 3-state outputs for bus-oriented applications. A clock (CP) and an Output

Enable (OE) input are common to all flip-flops.

The eight flip-flops will store the state of their individual D-inputs that meet the set-up and

hold times requirements on the LOW to HIGH CP transition.

When OE is LOW, the contents of the eight flip-flops are available at the outputs. When

OE is HIGH, the outputs go to the high-impedance OFF-state. Operation of the OE input

does not affect the state of the flip-flops.

Inputs can be driven from either 3.3 V or 5 V devices. When disabled, up to 5.5 V can be

applied to the outputs. These features allow the use of these devices as translators in

mixed 3.3 V or 5 V applications.

The 74LVC574A is functionally identical to the 74LVC374A, but has a different pin

arrangement.

2.

Features and benefits

40 C to +85 C and 40 C to +125 C

74LVC574A

Octal D-type flip-flop with 5 V tolerant inputs/outputs; positive

edge-trigger; 3-state

Rev. 5 — 18 December 2012

Product data sheet